XML 104 R32.htm IDEA: XBRL DOCUMENT v3.20.4

The Millicom Group - A.2. Joint Ventures (Details) - USD ($) $ in Millions		12 Months Ended
	Nov. 18, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of joint ventures [line items]
Statutory reserves unavailable for distribution		$ 310	$ 306	$ 324
Increase (Decrease) Joint Ventures [Roll Forward]
Investments in joint ventures		2,797
Investments in joint ventures		2,642	2,797
Joint ventures
Disclosure of joint ventures [line items]
Total net assets		3,072	3,346
Statutory reserves unavailable for distribution		153	142
Dividends and advances paid to Millicom		71	237
Guatemala joint ventures
Disclosure of joint ventures [line items]
Total net assets		$ 1,662	$ 1,767	$ 1,796
Proportion of ownership interest in joint venture	55.00%	55.00%	55.00%	55.00%
Dividends and advances paid to Millicom		$ 47	$ 209	$ 211
Increase (Decrease) Joint Ventures [Roll Forward]
Investments in joint ventures		2,089	2,104
Disposal of the Group's investments in Navega to Celtel		0
Results for the year		144	152	131
Accounting policy changes			0
Results for the year		144	152	131
Utilization of past unrecognized losses			0
Capital increase			0
Dividends declared during the year		(199)	(170)
Currency exchange differences		(3)	2
Investments in joint ventures		$ 2,031	$ 2,089	2,104
Comunicaciones Celulares S.A
Disclosure of joint ventures [line items]
Proportion of ownership interest in joint venture		55.00%	55.00%
Navega.com S.A.
Disclosure of joint ventures [line items]
Proportion of ownership interest in joint venture		55.00%	55.00%
Honduras joint ventures
Disclosure of joint ventures [line items]
Total net assets		$ (8)	$ 176	$ 198
Proportion of ownership interest in joint venture		66.70%	66.70%	66.70%
Dividends and advances paid to Millicom		$ 24	$ 28	$ 32
Increase (Decrease) Joint Ventures [Roll Forward]
Investments in joint ventures		708	730
Disposal of the Group's investments in Navega to Celtel		(83)
Results for the year		27	27	23
Accounting policy changes			0
Results for the year		27	27	23
Utilization of past unrecognized losses			0
Capital increase			0
Dividends declared during the year		(55)	(37)
Currency exchange differences		13	(12)
Investments in joint ventures		$ 610	$ 708	730
Telefonica Celular S.A
Disclosure of joint ventures [line items]
Proportion of ownership interest in joint venture		66.70%	66.70%
Navega S.A. de CV
Disclosure of joint ventures [line items]
Proportion of ownership interest in joint venture		66.70%	66.70%
Ghana joint ventures
Disclosure of joint ventures [line items]
Proportion of ownership interest in joint venture		50.00%
Increase (Decrease) Joint Ventures [Roll Forward]
Investments in joint ventures		$ 0
Investments in joint ventures		0	$ 0
Ghana
Disclosure of joint ventures [line items]
Total net assets		$ (263)	$ (223)	$ (63)
Proportion of ownership interest in joint venture		50.00%	50.00%	50.00%
Increase (Decrease) Joint Ventures [Roll Forward]
Investments in joint ventures		$ 0	$ 32
Disposal of the Group's investments in Navega to Celtel		0
Results for the year		0	(40)	$ (68)
Accounting policy changes			0
Results for the year		0	(40)	(68)
Utilization of past unrecognized losses			(5)
Capital increase			5
Dividends declared during the year		0	0
Currency exchange differences		0	8
Investments in joint ventures		$ 0	$ 0	$ 32
Bharti Airtel Ghana Holdings B.V.
Disclosure of joint ventures [line items]
Proportion of ownership interest in joint venture		50.00%	50.00%

X

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

+ References

No definition available.

+ Details

Name:	ifrs-full_DisclosureOfJointVenturesLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount of dividends received.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2019-01-01
-Paragraph B12
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2019-en-r&anchor=para_B12_a&doctype=Appendix&subtype=B
-URIDate 2019-03-27

+ Details

Name:	ifrs-full_DividendsReceived
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

The amount of investments in joint ventures in an entity's separate financial statements. [Refer: Joint ventures [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2019-01-01
-Paragraph 10
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=27&code=ifrs-tx-2019-en-r&anchor=para_10&doctype=Standard
-URIDate 2019-03-27

+ Details

Name:	ifrs-full_InvestmentsInJointVentures
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The amount of assets less the amount of liabilities.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IFRS
-Number 1
-IssueDate 2019-01-01
-Paragraph IG63
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=1&code=ifrs-tx-2019-en-r&anchor=para_IG63&doctype=Implementation%20Guidance
-URIDate 2019-03-27

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2019-01-01
-Paragraph 112
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2019-03-27

+ Details

Name:	ifrs-full_NetAssetsLiabilities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The proportion of ownership interest in a joint venture attributable to the entity. [Refer: Joint ventures [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2019-01-01
-Paragraph 17
-Subparagraph b
-Clause iii
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=27&code=ifrs-tx-2019-en-r&anchor=para_17_b_iii&doctype=Standard
-URIDate 2019-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2019-01-01
-Paragraph 16
-Subparagraph b
-Clause iii
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=27&code=ifrs-tx-2019-en-r&anchor=para_16_b_iii&doctype=Standard
-URIDate 2019-03-27

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2019-01-01
-Paragraph 21
-Subparagraph a
-Clause iv
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2019-en-r&anchor=para_21_a_iv&doctype=Standard
-URIDate 2019-03-27

+ Details

Name:	ifrs-full_ProportionOfOwnershipInterestInJointVenture
Namespace Prefix:	ifrs-full_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The entity's share of the profit (loss) of joint ventures accounted for using the equity method. [Refer: Investments accounted for using equity method; Joint ventures [member]; Profit (loss)]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2019-01-01
-Paragraph 85
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_85&doctype=Standard
-URIDate 2019-03-27

+ Details

Name:	ifrs-full_ShareOfProfitLossOfJointVenturesAccountedForUsingEquityMethod
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Decrease From Dividends Declared, Joint Ventures

+ References

No definition available.

+ Details

Name:	tigo_DecreaseFromDividendsDeclaredJointVentures
Namespace Prefix:	tigo_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Disposals, Investment

+ References

No definition available.

+ Details

Name:	tigo_DisposalsInvestment
Namespace Prefix:	tigo_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Increase (Decrease) In Joint Venture Arising From Change In Measurement Attribute, Initial Application Of IFRS 15 and IFRS 9

+ References

No definition available.

+ Details

Name:	tigo_IncreaseDecreaseInJointVentureArisingFromChangeInMeasurementAttributeInitialApplicationOfIFRS15andIFRS9
Namespace Prefix:	tigo_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Increase (Decrease) In Through Capital Increase, Joint Ventures

+ References

No definition available.

+ Details

Name:	tigo_IncreaseDecreaseInThroughCapitalIncreaseJointVentures
Namespace Prefix:	tigo_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Increase (Decrease) Joint Ventures [Roll Forward]

+ References

No definition available.

+ Details

Name:	tigo_IncreaseDecreaseJointVenturesRollForward
Namespace Prefix:	tigo_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Increase (Decrease) Through Net Exchange Differences, Joint Ventures

+ References

No definition available.

+ Details

Name:	tigo_IncreaseDecreaseThroughNetExchangeDifferencesJointVentures
Namespace Prefix:	tigo_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Statutory Reserves Unavailable For Distribution

+ References

No definition available.

+ Details

Name:	tigo_StatutoryReservesUnavailableForDistribution
Namespace Prefix:	tigo_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Utilization of Past Recognized Losses, Joint Ventures

+ References

No definition available.

+ Details

Name:	tigo_UtilizationofPastRecognizedLossesJointVentures
Namespace Prefix:	tigo_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	ifrs-full_JointVenturesAxis=ifrs-full_JointVenturesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_JointVenturesAxis=tigo_GuatemalaJointVenturesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_JointVenturesAxis=tigo_ComunicacionesCelularesS.AMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_JointVenturesAxis=tigo_Navega.comS.A.Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_JointVenturesAxis=tigo_HondurasJointVenturesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_JointVenturesAxis=tigo_TelefonicaCelularS.AMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_JointVenturesAxis=tigo_NavegaS.A.deCVMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_JointVenturesAxis=tigo_AirtelTigoGhanaJointVenturesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_JointVenturesAxis=tigo_AirtelTigoGhanaHoldingsB.V.Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_JointVenturesAxis=tigo_BhartiAirtelGhanaHoldingsB.V.Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: